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Edge-on HI-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog

文献类型：期刊论文

作者He, Min1,2; Wu, Hong1,2; Du, Wei1; Wicker, James3; Zhao, Pingsong1,2; Lei, Fengjie1,2; Liu, Jifeng1,2
刊名ASTROPHYSICAL JOURNAL
出版日期2019-07-20
卷号880期号:1页码:11
ISSN号0004-637X
关键词galaxies: evolution galaxies: formation radio lines: galaxies
DOI10.3847/1538-4357/ab2710
英文摘要Ultra-diffuse galaxies are objects that have very extended morphology and faint central surface brightness. Most UDGs are discovered in galaxy clusters and groups, but some are also found in low-density environments. The diffuse morphology and faint surface brightness make them difficult to distinguish from the sky background. Several previous works have suggested that at least some UDGs are consistent with exponential surface brightness profiles). The surface brightness of exponential disks is enhanced in edge-on systems, so searching for edge-on systems may be an efficient way to select UDGs. In this paper, we focus on searching for edge-on H I-bearing ultra-diffuse sources (HUDS) from the 40% Arecibo Legacy Fast ALFA (ALFALFA) catalog, based on Sloan Digital Sky Survey g- and r-band images. After correcting the observed central surface brightness to a face-on perspective, we discover 11 edge-on HUDS candidates. All these newly discovered HUDS candidates are blue and H I-bearing, similar to other HUDS in 70% ALFALFA catalog, and different from UDGs in clusters.
WOS关键词STELLAR POPULATION SYNTHESIS ; BAND SURFACE PHOTOMETRY ; SPIRAL GALAXIES ; ULTRADIFFUSE GALAXIES ; SCALING RELATIONS ; DUST ATTENUATION ; STAR-FORMATION ; DISC GALAXIES ; MASS ; CLUSTERS
资助项目National Natural Science Foundation of China[11403037] ; National Natural Science Foundation of China[11733006] ; National Key R&D Program of China[2017YFA0402704] ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000476822900007
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key R&D Program of China ; National Key R&D Program of China ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
源URL[http://ir.bao.ac.cn/handle/114a11/27178]  
专题中国科学院国家天文台
通讯作者He, Min
作者单位1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, 20A Datun Rd, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Sch Astron & Space Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
3.Chinese Acad Sci, 20A Datun Rd, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 He, Min,Wu, Hong,Du, Wei,et al. Edge-on HI-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog[J]. ASTROPHYSICAL JOURNAL,2019,880(1):11.
APA He, Min.,Wu, Hong.,Du, Wei.,Wicker, James.,Zhao, Pingsong.,...&Liu, Jifeng.(2019).Edge-on HI-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog.ASTROPHYSICAL JOURNAL,880(1),11.
MLA He, Min,et al."Edge-on HI-bearing Ultra-diffuse Galaxy Candidates in the 40% ALFALFA Catalog".ASTROPHYSICAL JOURNAL 880.1(2019):11.

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